Author:
Sarker Md Shamim,Yao Lihao,Yamahara Hiroyasu,Ma Kaijie,Liao Zhiqiang,Terao Kenyu,Tang Siyi,Ramaraj Sankar Ganesh,Seki Munetoshi,Tabata Hitoshi
Abstract
AbstractSpin waves (SWs), an ultra-low power magnetic excitation in ferro or antiferromagnetic media, have tremendous potential as transport less data carriers for post-CMOS technology using their wave interference properties. The concept of magnon interference originates from optical interference, resulting in a historical taboo of maintaining an identical wavevector for magnon interference-based devices. This makes the attainment of on-chip design reconfigurability challenging owing to the difficulty in phase tuning via external fields. Breaking the taboo, this study explores a novel technique to systematically control magnon interference using asymmetric wavevectors from two different SW modes (magnetostatic surface SWs and backward volume magnetostatic SWs) in a microstructured yttrium iron garnet crossbar. Using this system, we demonstrate phase reconfigurability in the interference pattern by modulating the thermal landscape, modifying the dispersion of the interfering SW modes. Thus, we manifest that such a tunable interference can be used to implement reconfigurable logic gates operating between the XNOR and XOR modes by using symmetric and asymmetric interference, respectively.
Funder
Japan Society for the Promotion of Science
University of Tokyo
Japan Science and Technology Agency
Publisher
Springer Science and Business Media LLC
Cited by
2 articles.
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